Holding device for dressing tools or the like



Jgn; 30, 19323. 1,443,504 F. W. ROBERTS ET AL.

Howme DEVICE FOR DRESSING TOOLS on THE LIKE.

FILED JAN. 30. 1920 2 SHEETS-SHEET I A TT'OR/VEVE.

Jail. 30, 1923.

F. w ROBERTS ET AL. HOLDING Dzav i ci FOR UREss NG TooLs OR THE L KE.

2 SHEETS-SHEET 2 FILED JAN, 30. 1920 specification. I p

Th s invention relates to improvements in 7 i oi pulp.

Patented Jan. 30, 1923.

U A am frnnnnioirw. ROBERTS Ann RALPH; B. nonnn'rsnor noeicron'r; Yonn;Assrenons rortonnnrsmnnuraomnnrns 00;, oanooxrom, NEWfY-ORK.

I v HOLDING nnvronron nREssINGinooLs on mnnnrnn" A-mlication filedJanuary 30, 1920., sei'iainoqssaacr.

' nnrsand RALPH R. Roni nis citizens. of the United States residingatLockport, nthe. Ki State oi New York,

county of Niagara have invented a net and useful Improvenientin HoldingDevices for DressingTools or the like, of which the following isaholdingdevicesfor hurrsmdressing orzi'acing tools or cuttcisoi the sort usedfor. dressing or pi'epai'-iiigtlie surfaces of pulp qrindmg stones ortor similar purposes.

ln the-grinding oi pulp woodhy means of grindstones, it, has been foundthatoetter resi' ts are obtained by using stones having a grindingsurface produced by dressing the grinding storm with two or moredressing tool having diilerent surfaces. A burr-or J -,g tool is usuallyarranged in a holder is clamped in a tool carriageinovable crosswise o tthe face of the stone, and in order to produce the desired surface itis'necessary to talnx one inn-r holder out of the ca; inige and replaceit by another. th tool Cmli s are usually arranged in pieces under thegrinding machine which i are diliicultoi access, the changing ottburrsis a ratherdifiicnit and inconvenient opera-i tion and isthereiore oftenneglected, which results in the production ofan interior grade The ol}a; of the present invention are to provide an improved holdingdevicewhich may he clamped to the carriage and on which two or more dressingtools maybe secured, anvot which "may be placed into operative re ationto the grinding stone without 11emoving the holder from the carriage;also v to provide a holding dev ce oi th s kind wlth n1 .5 for enalning:the burrs or tools to be crawl) placed into and out of operativerelationto the stone andi'or lioldingtheburrs securely in the positionsin which they are s L; also to so construct the holding device that (theiislllf-i can he placed into a position in which a plurality or burrsengage the stone at the same time; also to provide a holde which is soconstructed that when a plural ityr oi? burrs are in operative relationto the stone at the same time, the burrswil l have a liinite-z'i:novein'ent relatively to the holder so as to perm t the hurrs to aduStv of this sort of the dressing tools-omit show the holding device. c1

F'g. i is a fragmentary. side elevation Since themselves relatively tothe stonet also to improve the construction of holding devices in otherrespects hereinafter specified. 1 1 1 t I The toolholding; device ishereinafter de scribed as used in oonnection with burrs for facing-ordressing grindstones for grinding woodpulp, hut it'willbe understoodthat it is not'intended to limit the invention to this I use, since theholding devicemay be used in L connection with other kinds oftools andfor operating on work" other than grindstones.

In the accompanying drawings: o

Fig. l is a side elevationof a holding de vice embodying theinventionand; showing the parts thereof'in positionfor placing two dressing toolsin operative relationftofthe v pulp grindingstone'.

Fig. 2 is atop plan view thereofijwith the dressing tools omitted. j iFig. 3 is a longitudinalsectional elevation thereof on line 33 lg. 2 andwithone of the device showing the two dressing :tools securedthereonundone oi: them in operat ve position.

Fig. is a transverse section of the supportingmember of the device. online 55 Fig.1; v c

Fig, Gris a transverse sectional elevation of the device'on line Brieflystated the'toolvholdingrdevice emed to more clearlv so a bodying theinvention includes a tool carry-v ing head on which one or more burrs orfacing tools are JOLHIllllGCl-llnclWl11Cl'Ll$ p1voted to swing any ofthetools or hurrs into operative relation to the work. This mov able headis pivotally mounted'upon afstem or rod and'thepivot'ed head andthe stemto which it is connected are both mounted one stationary frame member orholderwhichis rigidly securedon the tool carriage (not shown) on whichthe toolhiflding device is adapted to be used, the itra-nie member andpivoted liead'heing provided with interlock inn-parts't-orconfine thepivoted. head in any desired position.

A represents the tool holding:- header meniber on which a number oftools or burrs are niountecLtwo burrs or dressing tools B and Bibeingemployed in the construction shown. Thistooli holding head may he,of

any suitable construction, that shown com- PIISIIlgWOlOlOGCl portions ahaving bosses or enlarged portions a which form seats for the ends ofthe shaftsb on whlch the burrs B and B are arranged, the shafts 1n thecon-' struction shown being rigidly'held in the bosses" by means ofisetscrews a webbed portions (1 are also providedwith outwardly extendingstuds a the object'of which will be hereinafter explained. The

tool holding head is provided with two sleeve portions a in which'abearing pin C is se cured, preferably by pins a pas'singthroughthe'sleeve-portions at and the bearing pin C. The two portionsoi thetool holding head A are connected, by means of a yoke a formed integralwith the'sleeve portions as The tool holding headA is pivoted to anouter enlarged head d ofa' rod or stem D, the enlarged portion (Z beingarranged between the two sleeve portions a? of the tool holding head andthe pin C passes through (a hole in the'enlarged portion d of the; stemor rod D,"so that the toolcarrying head can swing about the axis of thebearing pin Q.

The stationary or supporting irame tor the tool holding head A and thestem or rod D may be of any suitable construction adapted to hold'thepivoted head in various positions in wh ch one or another or two toolsmay be placed lnto operai to the worln In the construction shown iorthis purpose the stationary frame member includes a shank portion Ewhich is made of any suitable cross section adaptmg it to be clamped.intool carriages as commonly used,'the"shank portion shown being sub-'stantially square in cross section, and an outer forked or supportingportion which 15 preferably formed integralwith the shank portion E. Theouter] forked portion- F in the construction shown, includes arms 7extending laterally from the shank portion E and outwardly and forwardlyextending sides "orwebbed portions) which are'adapted tosupport the toolholding head A in its several positions. For this purpose the webbedportions f may be provided at or flanged.

their outer edges with enlarged edges f having upper and lower recessesand ffand intermediate recesses 7.- These re cesses are adapted toreceive thestuds a extending outwardly from the opposite si es r ol thepivoted tool carry ng head ii and the upper and lower recesses and f arev preferably made ofsuch size as to hold the The reiatio u burrs mayadjust themselves relatively to the stone or work X to enable both burrsto bear with substantially equal pressure against the work. The webbedportions 7 of the outer supporting portion 1* are pref erably providedwith slots 7 through which the hearing pin (.3 extends and which permitthe bearing pin to move in a direction substantially lengthwise ofthe'shank portion E, to a limited extent. The ends of the bearing pin Cextending beyond the webbed portions or sides f are preferably madesquare or of other shape adapted to cooperate with a wrench, so th'a-tby turnin the bearing pin G the tool holding head A may be moved to itsdifferent positions relatimely to the rigid frame or supporting member.H 7

-By means or" the construction described the tool holding head may bemoved out wardlywith regard to the outer forked p0rtion F ofthe rigidframe member so that the studs a extend beyond the flanged portionthereof. The tool holding head may then be swung, in the constructionshown,

.intothree different positions. It the studs o are movedinto the upperrecesses f", the lower burr Wlll be held 1n operative relatlon to thegrindstone. ii the studs a are nlacedinto the intermediate recesses fbotl burrs or tools are adapted to operate on the stone. lit the studsa?" enter into the lower recesses f the upper burr will be placed intooperative relation to the stone.

The flanged parts f of the webbed portions f terminate at their upperand lower ends in outwardly pro ecting parts f and h' h i t f h t l w 10iorm sops or b e sucs a L.) limit the swinging movement of the toolholding head A in opposite directions when the studs a? are out of therecesses.

In: order to hoid the tool holding head A in the desired positionrelatively to the rigid frame member, means are preferably provided forlocking the stem or rodjD relatively to the snank portion E of the rigidframe member. For this purpose the enlarged front portion (Z of the rodD is provided with shoulders adapted to bear against correspondingshoulders 9 formed on the outer portion of the shankE. The opposite endofthe rod or stem D wheel G is provided which isv internally threaded tocooperate with the threads of the rod D and w inch has a shoulder 9adapted to bear against the adjacent end of the shank E to draw the rodor stem D rearwardly to a position inwhich shoulder oi? the enlargedportion (Z bears the shoulder g of the shank In the use or this device,if it is vdesired to change from one burr to another the nut or handwheel is first turned to move out of engagement w'th the end of theshank 15 against threaded as shown at g and a nut or hand 7 and the handWheelis then pushed. for Wardly moving the rod or stem D, and

the tool holding head A pivoted thereto, for- Wardly so that the studs awill be out of engagement with the recesses in the forked portion or therigid frame member. 'A wrench may then be placed into engage.-

ment Withone or another end of the bean ing pin C so as to swing thetool holding head A into the desired position in which the studs a? willenter into'another recess. The hand Wheel Gris then again turned on thescrew threaded stem into engagement With the shank portion E to hold thetool holding head in the desired position. In

' this manner-one or another burr can easily tion of a pivotedtool-carrying member having a relatively fixed pivotal axis and hav-.ing means for supporting a plurality of tools, a supporting memberhaving a plurality of recesses therein and movable to- Ward and from theaxis of said tool-carrying member, and a part on said tool-carryingmember for engaging one of said recesses for presenting one or anotherof the tools to the work.

2. Inatool holding device,v thecombina tion of a supporting memberhaving a shank portion, a tool 'carrying'member movable thereon andhaving means for supportinga plurality of tools, and means on said holdi mg device to permit any. of said tools to bepositioned in operativerelation to the work, and a part extending lengthwise of said shankportion for holding said tool carrying member in operative relation tosaid supporting member. V

3. In a tool holding device, the combina-' tion of a supporting member,a tool carrying member movable thereon and having means for supporting aplurality of tools,

cooperating parts on said members whereby any tool 1:. be held inoperative relation to the work. said coo aeratin )arts also aoting topermit lJWO tools to be simultaneously positioned and held in operativerelation to the Work, and means for permitting a relativemovementbetween said supporting member and said tool carrying memberwhen said tool carrying member is in 'a position tohold two tools inoperative relationfto the Work.

In a tool holding device, the combination of a supporting member, a toolcarry ing me nliaer movablev thereon and having in adjusted largedportion.

means for supporting a plurality of tools means OIl 'SZtlCl holdingdevice to permit any of said tools to be positioned and held inoperative relation to the Work, and means f for permitting a pluralityof toolsto be simultaneouslypositioned and heldin'opera i tive relationto the Work, said means per mitting saidtools tomove to a limited extentrelatively to said supporting member.-

5. In a tool holding device, they combination of a supporting member, atool carry ing member, said carrying member being piv'otally held onsaid supporting member and supporting a. plurality of tools, and meansformoving said. pivoted member end- Wise relatively to said tool holdingdevice to place any' of said tools in operative relation to the Work. r

6. In a tool holding device, the combina tion of a supporting member, atool carrying member including a rod having a head pivoted on one endthereof, a plurality of tools secured in said head said SUDDOI'UIW' 7 L:8

member having an enlarged portion adapted to supportv said head indilferent'positions relatively to the Work, and a portion 00- operatingWith said rod to hold saidhead as Y in adjusted position relatively tosaid isup porting member.

7. In a tool holding device, the combination of a supporting member anda tool carrying member, said supporting member comprising a shank andhaving an enlarged portion on one end thereof, said carrying membercomprising a rod movable endvvise of said shank and having a headpivoted on one end thereof adapted to supporta plurality of tools, saidhead being. movable relatively to said rod into various operativerelations to said enlarged portion. andmeans cooperating with said rodto lock said head position relatively to said en 8. In a tool holdingdevice, the combination of a supporting-member and aitool IQO carryingmember, said carrying member be-v ing pivotally held on said supportingmember and supporting a plurality of tools,

-means on said tool carrying member movable into one or another of aplurality of recesses on said supporting member to place one or anotherof said tools in operative position relative to the work, and means "forlooking the parts to hold theselected tool in said operative position. I

9. In a tool holding device, thecombina tion of a supporting member anda tool carrying member. said carrying member be ing pivotally held onsaid supporting member and supporting a plurality of tools. a

stud on said tool carrying member and a. plurality ot recesses on saidsupporting member, a slidable part on which said tool carrying member ispivoted and which is movable relatively to said suooorting-meia V I I ul i a ber whereby said tool carrying member may be moved relatively tosaid supporting mem ber to place said stud in one or another of saidrecesses to position one or another of said tools in operative relationto the work, and means for loclring said slidable part against movementto positively hold said stud in the selected recess.

10. In a tool holdingdevice, the combination of a supporting member anda tool carrying mcmber, said carrying member being pivotally held onsaid supporting member and supporting a plurality of tools, a

stud on said tool carrying member and a 'plurality of recesses on saidsupporting member, a slidable part on which said tool carrying member ispivoted and which 1s movable relatively to said supporting memberwhereby said tool carrying'member'may be moved relatively to saidsupporting memher to place said stud in one or another of said recessesto position one or another of said'toolsin operative relation to thework,

an intermediate recess on said supporting plurality of tools, a stud onone of said members adapted to enter one or another of a plurality ofrecesses on the other or said members to place one or another of saidtools inoperative relation to the work, a rod movable on said shank andto which said head is pivotally connected, means on said shank forlocking said rod to hold said stud in the selected recess and whichpermits said rod to be released and moved to allow said'head to be movedto place'said stnd'in another recess. I 12. In a tool holding device,the combination or" a supporting member and a toolcar rying member, saidsupporting member comprising a shank and having an enlarged portion onone end thereof, said carrying frame having a head movable relativetosaid enlarged portion and adapted to support a plurality of tools, astud on one of said members adapted to enter one or another of aplurality of recesses on the other of said members to place one oranother of said tools in operative relation to the work, oneo'l saidrecesses being so positioned as to cause the head to present a pluralityof tools simultaneously to the worlr, a rod movable on said shank and towhich said head is pivotally connected, means on said shank-tor lockingsaid bar to hold said studin thesepivoted on one endthereoli,a'plurality of:

dressing tools rotatablymounted on said head, interlockingparts on-saidhead and said supporting member which are adjustable to differentrelative'positions for presenting one or another dressing tool to thesurface to be dressed, locking means on the opposite end ofsaid shankadapted to hold the selected dressing tool in operative position, andwhich may be actuated to release and allow said bar, to slide-in saidshank so that said head may be swung about its pivotal connection withsaid rod to change the relative positions of said adjustable parts whenit is desired to place another tool in operative relation to .=thesurface to be dressed. 14:. In a tool holding device, the combination ofa supporting member, a tool carrying member movable thereon and havingmeans for supporting a plurality of tools, and means for holding aplurality of tools in operative relation to the work and for permittingsaid tool carrying member to move relatively to said supportingmember toa limited extent to enable said tools to adjust tion of a supportingmember, a tool carrying member pivotally supported on said supportingmember and having-a plurality of tools journalled thereon, said toolcarrying member being adapted to be lockedin various positionsrelatively to said supporting member to place one or anothertoolinto'operative relation to the work, and means for moving thepivotal connection between said members relatively to said supportingmember to move said members out oi locking engagement. r y t 16. In atoolholding device, the combination of a supporting member, a toolcarrying member pivotally supported on said supporting member and havinga plurality of toolsjourn'alled thereon, said tool carrying member beingadapted to be locked in various positions relatively to said supportingmember to place one or another tool into operative relation to the work,means for moving the pivotal connection between 7 said membersrelatively to said supporting memher to move said members out of lockingengagement, and means tor locking said pivotal connection againstdisplacement relatively to said supporting member to hold stones, thecombination of a tool carrying shank to hold said head in'the adjustedp0- head having a plurality of dressing tools sition; I

journalled thereon, a hollow shank portion, Witnessour hands this 20thday of Jan a rod arranged in said hollow shank portion nary, 1920. 5 andon which said heed is pivotally secured, Y

means on said hollow shank adapted to en FREDRICK S" gage said head forholding the same in Va- RALPH R rious positiens to place any of saidtools Witnesses: i into operative relation to the stone, and A. C.HAINES,

10 means for locking said rod relatively to said R. M. KInzLY.

